21931973

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{479}}^1$

素因数の和:728

約数の個数: 16

約数和(自身を含む): 26050560

約数和(自身を除く): 4118587

約数列:

[1, 7, 31, 211, 217, 479, 1477, 3353, 6541, 14849, 45787, 101069, 103943, 707483, 3133139, 21931973]

約数ペア:

[(1, 21931973), (7, 3133139), (31, 707483), (211, 103943), (217, 101069), (479, 45787), (1477, 14849), (3353, 6541)]